Merge pull request #37937 from mantidproject/37594_sliceviewer_sample…

…_data_order

37594 sliceviewer sample data order

docs/source/release/v6.11.0/Workbench/SliceViewer/Bugfixes/37594.rst

@@ -0,0 +1 @@
+- A warning will now be displayed if a workspace with unordered spectrum numbers is opened in the :ref:sliceviewer. These workspaces can fail to display correctly and may result in errors.

qt/applications/workbench/workbench/plugins/workspacewidget.py

@@ -260,6 +260,13 @@ def _do_slice_viewer(self, names):
         parent, flags = get_window_config()
         for ws in self._ads.retrieveWorkspaces(names, unrollGroups=True):
             try:
+                y = ws.getYDimension()
+                if y.getName() == "sample":
+                    spec_xvals = [ws.getYDimension().getX(ispec) for ispec in range(ws.getNumberHistograms())]
+                    # Check if the q values are sorted, if not display error
+                    if sorted(spec_xvals) != spec_xvals:
+                        logger.warning("Warning: Invalid Data Format. Consider sorting by sample number and try again")
+
                 presenter = SliceViewer(ws=ws, conf=CONF, parent=parent, window_flags=flags)
                 presenter.view.show()
             except Exception as exception: